feat(backend): add contract upgrade path management

Cargo.toml

@@ -7,6 +7,7 @@ members = [
     "examples/token",
     "examples/escrow",
     "examples/vesting",
+    "examples/prediction-market",
 ]
 resolver = "2"
 

backend/src/api/handlers/contracts.rs

@@ -3,10 +3,11 @@ use serde::{Deserialize, Serialize};
 use std::sync::Arc;
 
 use crate::api::contracts::ApiResponse;
-use crate::error::AppError;
-use crate::services::compilation::{CompilationResult, CompilationService};
-use crate::services::dependency_analyzer::{DependencyAnalysis, DependencyAnalyzer};
 use crate::api::handlers::profiling::AppState;
+use crate::error::AppError;
+use crate::services::compilation::CompilationService;
+use crate::services::contract_upgrade::{ContractUpgradeManager, ContractUpgradeRequest};
+use crate::services::dependency_analyzer::DependencyAnalyzer;
 
 #[derive(Debug, Clone, Deserialize)]
 #[serde(rename_all = "camelCase")]
@@ -21,6 +22,18 @@ pub struct AnalyzeRequest {
     pub cargo_toml: String,
 }
 
+/// POST /api/v1/contracts/upgrade-plan
+pub async fn create_upgrade_plan(
+    Json(payload): Json<ContractUpgradeRequest>,
+) -> Result<impl IntoResponse, AppError> {
+    let service = ContractUpgradeManager::new();
+    let result = service
+        .plan_upgrade(payload)
+        .map_err(|err| AppError::ValidationError(err.to_string()))?;
+
+    Ok(Json(ApiResponse::new(result)))
+}
+
 #[derive(Debug, Clone, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct NetworkConfig {

backend/src/api/handlers/mod.rs

@@ -1,8 +1,7 @@
+pub mod admin;
 pub mod contracts;
 pub mod dashboard;
 pub mod errors;
 pub mod profiling;
 pub mod stellar;
 pub mod ws;
-pub mod contracts;
-pub mod admin;

backend/src/main.rs

@@ -196,18 +196,23 @@ async fn main() -> Result<(), anyhow::Error> {
                     "/analyze-dependencies",
                     post(backend::api::handlers::contracts::analyze_dependencies),
                 )
-                .with_state(state.clone()),
-        )
-        .route(
-            "/api/v1/networks",
-            get(backend::api::handlers::contracts::get_networks),
-        )
-                .route("/compile", post(backend::api::handlers::contracts::compile_contract))
-                .route("/analyze-dependencies", post(backend::api::handlers::contracts::analyze_dependencies))
-                .route("/compliance-check", post(backend::api::handlers::contracts::check_compliance))
-                .route("/logs", post(backend::api::handlers::contracts::log_contract_call))
-                .route("/logs", get(backend::api::handlers::contracts::get_contract_logs))
-                .route("/templates", get(backend::api::handlers::contracts::get_templates))
+                .route(
+                    "/upgrade-plan",
+                    post(backend::api::handlers::contracts::create_upgrade_plan),
+                )
+                .route(
+                    "/compliance-check",
+                    post(backend::api::handlers::contracts::check_compliance),
+                )
+                .route(
+                    "/logs",
+                    post(backend::api::handlers::contracts::log_contract_call)
+                        .get(backend::api::handlers::contracts::get_contract_logs),
+                )
+                .route(
+                    "/templates",
+                    get(backend::api::handlers::contracts::get_templates),
+                )
                 .with_state(state.clone()),
         )
         .route(